大學(xué)物理雙語(yǔ)試卷A

1、廣東工業(yè)大學(xué)考試試卷 ( A )課程名稱: 大學(xué)物理一（雙語(yǔ)） 考試時(shí)間: 第21周星期三 ( 7月12日)題號(hào)一二三四五六七八九十總分得分評(píng)分人1. Multiple Choices(選擇題，每個(gè)題目3分，共30分。只有一個(gè)正確答案。)1）centripetal 向心的2) rim 輪子3) stretch 拉長(zhǎng)，拉緊學(xué) 院： 專 業(yè)： 學(xué) 號(hào)： 姓 名： 裝 訂 線 4) transverse wave 橫波， respectively 分別的5) in phase 同相； constructive interference 相干相長(zhǎng)6) increase 增加7) incident 入射

2、；destructive interference相干相消8) diffraction grating 衍射光柵9) relativistic effect相對(duì)論效應(yīng)10) electron 電子2. Complete Blanks.(填空題，每個(gè)題目3分，共30分。)1). An electron travels with a velocity of 0.99c along a drift tube that is 10m long. The transit time as measured by an observer who is stationary with respect to t

3、he drift tube t is _, and by an observer who moves with the electron t0 is _.2）The Brewster angle for producing a plane polarized beam of light by reflection in air from a crown glass surface is 56.7。, the refraction angle is _.3）The figure shows an overhead view (俯視) of a ball with mass m boundcing

4、 from a vertical wall without any change in its speed v . Consider the change in the balls linear momentum, _, the direction of is _. yx4) The position of a particular particle as a function of time is given by . The particles acceleration as a function of time is _.5) w1w 2A man stands on a freely

5、rotating platform. With his arms extended, his rotation frequency is 0.25rev/s. But when he draws in, his frequency is 0.80rev/s. The ratio of his moment of inertia in the first case to that in the second () is _.6) The equation of a loudspeaker vibrates in SHM is , the maximum velocity is _ , and t

6、he maximum acceleration is _.7) If 344 bright fringes are counted when the movable mirror moves 0.125mm, the wavelength of the light entering a Michelson interferometer (干涉儀) is _nm.3. Solving Problems. (計(jì)算題，每題10分，共40分)1). An Atwoods machine （阿基伍德機(jī)） consists of two masses, m1 and m2, which are conne

7、cted by a massless inelastic （非彈性的） cord that passes over a pulley. If the pulley has radius R and moment of inertia I about it axle. a) Draw free-body diagrams for each of the two blocks and the pulley. b) Determine the acceleration of the masses m1 and m2, c) Compare to the situation in which the

8、moment of inertia of the pulley is ignored. 2）Unpolarized light falls on two polarizer sheets whose axes are at right angles. (a) What fraction of the incident light intensity is transmitted? (What is I1 and I2? ) (b) What fraction is transmitted if a third polarizer is placed between the first two

9、so that its axis makes a 60。angle the axis of the first polarizer? (c) What if the third polarizer is in front of the other two?3) The force required to compress an imperfect horizontal spring an amount x is given by F=150x+12x3, where x is in meters and F in Newtons. If the spring is compress 2.0m, a) what was the work required to compress the spring? b)what speed will it give to a 3.0-kg ball held a